Subtracting Whole Numbers.
Subtraction means take away (it is opposite of addition). The answer in a subtraction problem is called the difference. Subtrahend is the number to be subtracted from another number (the minuend) minuend – subtrahend = difference
To find the difference between two numbers, sometimes you need to regroup, or borrow, from another number. Example:
When the digit in the subtrahend is larger, decompose 1 unit of higher value into 10 units of the next lower value, and regroup.
WN07 Subtracting Whole Numbers
WN08 Whole Numbers Subtraction
WN10 Addition and subtraction of Whole Numbers
WN11 Missing values in Addition and Subtraction
WN12 Find the Missing Addends
EQ01 Solving_Equations with variables in both sides
Addition and subtraction are opposite operations so you can use one to check the other. If A + B = C, then C – B = A
Word Problems – Using Whole Numbers
Write your own word problem: